I. X-ray security machine
X-ray is a kind of electromagnetic wave with strong penetrating power. Generally, the security inspection function of 5030 with small single energy penetrates the steel plate above12 mm. During security inspection, X-ray objects with different density and composition and the same density and composition can react with the X-ray to form an image, and the security inspector can judge the object just by staring at the screen on the other side of the operation platform.
Second, the metal detection door
The metal detection door is a metal object that can pass the alarm, because the door panels on both sides are equipped with sensors, which can emit and receive alternating electromagnetic fields. The metal conductor hidden in the suspicious human body will produce eddy current, which will generate magnetic field through tiny eddy current and reflect to the original metal detection door induced magnetic field, and the area will light up with red light and give an alarm.
Third, the liquid detector
The electromagnetic measuring circuit is used to detect the liquid in the container, and the obvious physical characteristic of dielectric constant is used to judge whether the liquid is safe or not. When dangerous liquids such as water, soft drinks and dairy products are detected, the instrument gives safety tips; When alcohol, gasoline and other inflammable and explosive dangerous goods are detected, the instrument gives an alarm prompt.
Working principle of safety instrument
The security detector is an electronic device that sends the checked baggage into the X-ray inspection channel through the conveyor belt to complete the inspection. When the luggage enters the X-ray inspection channel, it will block the package detection sensor, and the detection signal will be sent to the system control part to generate an X-ray trigger signal, which will trigger the X-ray light source to emit an X-ray beam.
The X-ray beam passes through the inspected object on the conveyor belt, and the X-ray is absorbed by the inspected object, and finally bombards the semiconductor detector installed in the channel. The detector converts X-rays into signals, and these weak signals are amplified and sent to the signal processing cabinet for further processing, and these signals are displayed on the display screen after processing.